Thanks . By dome lighting I meant something like this placed directly on tank top screen/glass

http://lllreptile.com/store/catalog/reptile-supplies/light-fixtures/-/ceramic-mini-heat-lamp/

I have never set up a terrarium but use them for my snakes find they direct heat better into the tank.
I dont want extra heat for my mantellas and since using plants thus going to use flourscent small spiral bulbs .
At 6700k spectrum you use